Sherwin Williams HS High Hardness Automotive Clear Coat Fast Dry 2K Varnish Hardener Kits
Automotive clear coat is the final protective layer in modern vehicle refinishing systems. SW990 Efficient Fast Dry Clear Coat is formulated with acrylic polyurethane technology to provide a transparent protective film with strong gloss and durability.
Designed for professional body shops, the coating delivers reliable leveling performance and practical drying speed. Once cured, the surface can be sanded and polished easily to obtain a smooth finish suitable for automotive repainting projects.
The coating forms a transparent and glossy surface that improves the visual quality of automotive topcoats.
Its curing profile supports faster workshop turnaround compared with many conventional clear coats.
When sprayed with recommended equipment, the coating levels well and forms a uniform film.
The polyurethane structure provides resistance to weathering, fuel splash, and cleaning chemicals.
This clear coat is suitable for:
- Automotive repair paint systems
- Vehicle refinishing workshops
- Used car refurbishment
- Car dealership repainting departments
- Automotive paint distribution markets
It is compatible with common basecoat systems used in two stage automotive painting processes.
| Parameter | Details |
|---|---|
| Product Model | SW990 |
| Coating Type | Two Component Acrylic Polyurethane |
| Color | Transparent |
| Mixing Ratio | 2 Clear 1 Hardener 0.2 to 0.3 Thinner |
| Spray Coats | 2 coats |
| Film Thickness | 40 to 60 μm |
| Flash Time | 5 to 15 minutes |
| Dust Free | 30 to 45 minutes |
| Air Dry | 16 hours at 23°C |
| Oven Bake | 30 minutes at 60°C |
| Pot Life | 2 hours at 20°C |
| Shelf Life | Clear coat 3 years Hardener 2 years |
Before spraying the clear coat:
- Ensure the basecoat layer is fully dried
- Remove dust using compressed air
- Clean the surface using a tack cloth
- Make sure the panel surface is clean and free of contaminants
Proper surface preparation helps ensure strong adhesion and consistent coating appearance.
Spray Equipment
Nozzle Size: 1.3 to 1.4 mm
HVLP Spray Gun
Air Cap Pressure: 0.7 bar
RP Spray Gun
Pressure: 1.8 to 2.0 bar
Apply two coats with a 5 to 15 minute flash interval.
Use automotive grade thinner compatible with polyurethane clear coat systems.
Yes. It can be used for both panel repair and full vehicle repainting.
Light polishing can normally be performed after the coating has fully cured.
Yes. When spraying above 25°C, a slow hardener is recommended.
Yes. Fast, standard, and slow hardeners are available to suit different temperatures.
This product is intended for professional use.
- Use only in well ventilated areas
- Avoid open flame and sparks
- Wear protective gloves and respiratory protection if ventilation is limited
- Follow local regulations for waste disposal
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.